Mechanical motor for dish-washing machines.



W. R. WALKER. MECHAMCAL MOTOR FOR DlSH WASHING MACHINES.

APPLICATION FILED FEB. 18. I913.

Patented Oct. 26, 1915.

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W. R. WALKER. MECHANICAL MOTOR FOR DISH WASHING MACHINES. APPLICATIOPIJ.FILED FEB.18. 191s.

Patented Oct. 26, 1915.

3 SHEETS-SHEET 2- W. R. WALKER.

MECHANiCAL MOTOR FOR DISH WASHING MACHINES.

' APPLICATiON FILED FEB. 28. 1913.

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MECHANICAL MOTOR FGR DISH-WASHING MACHINES.

Specification of Letters Patent.

Patented (lot. 236, 1915.

driginal application filed May 31, 1911, Serial No. 630,280. Divided andthis application filed February 18, 1913. Serial No. 345L133.

To all whom it may concern J Be it known that l, Wnzrnno R. l/VALKER,

oil Syracuse, in. the county of (lnondaggs, in

State of New York, have invented. new

and useful Improvements in Mechanical. ll lo tors for Dislr-WoshingMachines, of which the following, taken in connection with theaccompanying drs wings, is a full, clear, and

description.

This invention relates to certain improveme in dish washers of the classset forth in my pending application No. 630,280, filed May 31, 1911, ofwhich the present applichtion is a division and refers more particularlyto the dashcr-opcrsting mechanism or means for reciprocating the dasher.

or the objects .of this invention is to cause the water to bectorciblyprojected upwardly and outwardly from the axis of the dasher inrelatively large radially elongated jets or streams so as to co erpractically the whole interior area of the receptacle and thcrehy moreeffectively Wash the dishes and other articles which may he supported inor upon the cage around the produced axis of the dasher.

'lhe force with which the jets or streams projected. upwardly from. thebottom of.

the receptacle against the superposed dishes or other articles to bewashed depends somewhat upon the rapidity snd power of descent of thedasher and the specific object of my present invention is to providesimple dasheuactuating mechanism whereby the dasher may be elevated witha minimum degree of power and, depressed after each elevation with 2.maximum degree of force by its sotusting motor as the drivingelementcontinues to rotate in the some direction. In other words, I have soughtto provide simple means .tor suddenly releasing the dashcr at itsmaximum 1 oint of elevation and then to instantly depress said slasherwith considerable power and rapidity so as to forcibly expel the waiterlaterally and upwardly with great force from underneath the dssher asthe latter descends.

Other ob -cots und uses relating to specific ports of the device will hebrought out in following description.

In the drcwingsigure 1 is 2. side vstion of s dish washing machineemhodying' the various features 01 my invention, portions the cues andlegs being; hrolrcn error. it an enlarged tronsbody of theoottom withits part of a cast 7 conical portion -l1.

' motor and adjacent portion of'its tensioning mechanism. F igs. 5 and 6are transverse sectional views taken respectively on lines 5, and 6-6,Fig. 4. Fig. 7 is an on largcd detail sectional view through thesupporting head for one end of the spring motor taken on line 7-7, Fig.4. Fig. 8 is an enlarged elevation, partly in section of the clutchconnection between the driving gear and crank arm taken on line 8-8,Fig. 2.

The dishes or other articles to be washed are placed at suitableintervals apart within and upon a more or less cylindrical cage -1- ofopen wire netting or equivalent open. work material capable ofpermitting the water to pass readily thercthrough. The entire ca e isadapted to be inserted into and removed from a receptacle -7+- and forthis purpose is provided with disn'letricnlly opposite handles or wireloops -8 by which it may be lowered and raised into and out; of thereceptacle or carried from place to place as may be desired, the extremediameter or the cage being substantially equal to the interior diameterof the recep-' tacle which, in this instance, is cylindrical andprovided with a cover 9-. By making the cage separate from thereceptacle it may be taken out and brought to the place where the dishesand other articles are collected so that the latter may in and theentire cage may then be carried to and placed within the receptacle.This receptacle is adapt-ed to retain a quantity of water and isprovided with reversely tapered conical bottom portions -10 and -11, theportion 10- constituting the main apex lowermost, while the conicalp0rtion--11-is arranged centrally of the bottom portion 10- with itsapex uppermost and preferably forms a metal plate --12 hsvingsn annularchannel 13- :lhe bottom ofthc channel 13- is inclined from a horizontalpla-ne nd is connected at its low point to on outlet onduit -18 hsvihgsnormally 11c be placed theresurroundmg the closed valve -l'9 opened atwill for withdrawing the water from the interior of the receptacle whennecessary.

The conical portion 11- of the plate -'-12- is provided with acentralaperture and stufling box or gland 22 in which is guided a verticallymovable plunger rod -23 carrying at its upperend a dasher 2e This dasheris adapted to coact with 14} a downward impact against the water in saidthe conicalportions 10--and -1l'- by receptacle to force such waterupwardlyinto and around the cage '1 in contact with the dishes or otherarticles thereon and for this purpose is provided with an upwardlyflaring or main conical portion 26- having its apex lowermost and acentral conical portion 27 having its apex uppermost, said centralconical portion being provided with radially elongated slots or openings-28 spaced uniform distances-apart circumferentially and adapted toregister with the underlying portion -11 in the bottom of the mainreceptacle -7-.

The angles-0r fiare of the conical portions -26 and -'27 of the dasherare substantially the same as those of the corresponding conicalportions -10 and -ll of the bottom of the receptacle 7 so as toestablish a more or less close fit therewith although adapted to be helda slight distance therefrom when the dasher is held in its extreme lowdown position by means of water is present in the bottom of thereceptacle and the dasher is driven downward with considerable force,the water impinged are between .the meeting faces of the cones -ll-- and-27- will be forcibly projected upwardly into and throngh the cage andagainst the dishes or other articles therein in diverging jetsorupwardly and outwardly from the produced axis of the dasher, while thewater between the conieal'portions 10- and -2(5 of the receptacle'anddasher respectively willbe also forced upwardly and outwardly throughthe outer portions of the cage to contact with any dishes or otherarticles which may be mounted therein, thereby forcibly driv'mg thewater upwardly and outwardly from the axis of the dasher. through allportions of the cage andover practically the entire area of the interiorof masses the receptacle where the dishes or other articles to be washedare placed.

The top 9- of the receptacle which is removable to permit the insertionand removal of the cage or dishes is also conical with its apexuppermost so that the water which is driven upwardly and outwardly bythe downward movement of the dasher impinges against the upwardlyconverging sides of the cover, thereby throwing the water inwardlytoward the center and allowing it to gravitate upon and across thedishes -or other articles in the cage. In this manner the dishes arewashed by the upward projection of the water and also by the return flowand the operation may be repeated as often as may be desired to effect athorough cleansing of the dishes or other articles.

Darker operating mcchwcism.-lvlounted upon and secured to the front sideoi the receptacle 7 is a gear case 38- in which is revolubly mounted aninternal gear -39- and a pinion -l0, the latter being adapted to beoperated by any suitable driw ing power as a hand crank -ilsecured tothe outer endof a pinion-shal t i2-. llhc gear 39'- is rotated upon asuitable stud '-43- on the gear case 38 and is provided with aclutchsection 'ii coacting with a companion clutch section -l5- on a crank arml6 which. is loosely mounted on the stud l3- and adapted to be locked tothe clutch section l4- by: means of one or more rollers -4c7- as shownin Figs. 3 and 8.

The outer end of the crank arm l6 is connected by a link -i8- and balland socket joint +l9 to one end oil a lever -50--- which is fulcrumed orpivotally sup-- ported upon a swinging support -51, the latter beingpivoted to a bracket -52- projecting radially from the underside of the7 bottom of the receptacle 7- as best seen in Fig. 2. The opposite endof the lever 50 is pivotally connected to the inter- 1 mediate portionof the plunger rod -Q3-- between the guide 31 and gland -22-- forimparting reciprocatory motion to the dasher 2 lin a manner presently described.

The clutch section li preferably COI1 sists of a circular disk formedintegral with the gear ity of recesses ---55, opening from its peripheryand spaced a uniform distance apart circumfercntially to receive acorresponding number of roller clutch members -l-7 of: substantially thesame or slightly less diameter than the recesses ---55-- in which theyare movable.

39 and providec with a plural- The companion clutch member .45-

preferably consists of a hollow hub formed integral with thekcrank a rml-G'- and provided with a plurality of, in this instance three,eccentric recesses -58 forming its tangential bearings 59- andsubstantially.

radial stop shoulders 60. One or more of the recesses 58 is or arelocated in a plane or. planes below the axis of the clutch disk 4A- sothat as the rollers are carried to corresponding planes by the rotationof said disk, they will gravitate into said recesses 58 and thereby lockthe disk to the crankarm as the disk is rotated in one direction, as forexample, to the right of Fi 1, at the same time permitting the crank arm to be rotated in the same direction independently of the disk. Theobject of this particular form of clutch connection is to permit thedasher to be elevated to its extreme up position by means of the handcrank -ll and intervening connections and also to permit the dasher tobe returned to its starting or extreme down position with considerableforce and velocity by means of spiral spring motors 61 as best seen inFigs. 2, 4, and 6. These spring motors 1'- are mounted in a horizontalposition parallel with each other upon suitable supporting rods -62-equi-distant from and at opposite sides of the lever 50 with. theirfront and rear ends secured to suitable collars 63- and 64: \Vl'llCh areloose upon the shafts or rods 62-. These springs are adapted to betensioned from both ends.

simultaneously and gradually as the dasher is raised to its extremeupposition and for this purpose the collars -63- are provided withinwardly projecting crank arms 65 both of which are connected by links66 and a yoke 67- to the front arm of the lever -50- as shown in Fig. 6,while the rear collars 64 are provided with separate crank arms 69-having their inner ends bearing against; the upper sides of the rear endof the lever 50. In order to produce this double tensioi "1g of thespring motor 61 by the re\ arse movementof opposite ends of the lever-51, said spring motors are reversely coiled upon their respectiveshafts 62- so that by connecting the crank arms G6 and 69 to the lever50 in the manner described, the springs always exert a downward pressureor pull upon the dasher 24- tending to hold it in its extreme downwardposition as shown in Fig. 2 thereby holding the outer or front end ofthe lever 50 and crank arm Il i, connected thereto in their extremeupward positions as shown in Figs. 1,

" with one or more of the rollers 9i and o 'l7 in position to lock thegear to the crank arm -fl6.

' The tension of the springs -61 may be adjusted at will to operate thedasher downwardly with desired velocity and force and for this purposeeach of the levers 65 is mounted for independent rotary movement uponits collar 63- which is provided with a series of radial apertures,beyond two or more of the apertures 81 is being withdrawn andreinserted in another aperture, whereupon such tool may he removed whichpermits the spring to rock the collar -63 until stopped by theengagement of the pin 81 with the end of the recesses 82. This operationmay be repeated as often as may be necessary to produce the desiredtension of the springs.

It is now evident that by rotating the hand crank -fl1 and pinion 40connected thereto in the direction indicated by arrow X, Fig. 1, thegear -39- and crank arm 46 will be rotated in the same direction therebydepressing the outer end of the lever -50- and elevating the dasheragainst the action of the retracting springs or motor 61- until thecrank arm l6 has been moved through an arc of substantially 180 or to aposition diametrically opposite to that shown in Figs. 1 and 2,whereupon as soon as the crank arm passes the center on the half turn,its rotary motion will be continued through the other half turnindependently of the hand crank 4l and gears by means of the springmotors 61- thus depressing the dasher 24 with considerable velocity andpower into the water in the bottom of the receptacle. This downwardmovement of the dasher and consequent impact with the water causes suchwater to be forced upwardly and outwardly through the cage and againstthe dishes or other articles therein with great velocity, therebyeffectively cleansing such articles which cleansing is further aided bythe gravity return of the water to the bottom of the tank, thisoperation being repeated as often as may be necessary to produce athorough cleansing of the articles which may be placed within the cage.

In operation the soiled dishes are properly distributed in and upon thetray or cage either before or after the latter has been placed in thevat or water retaining receptacle and owing to the fact that it isunnecessary to handle any-dishes or other articles during the washingoperation,it is evident that boiling hot water may be used either day,the cages with the partially washed been set "forth in such full, exactand clear terms as to enable any one slrilledin the art to make and usethe same and although I have shown a speclfic iiomn oi receptacle anddish supporting cage or tray, 1 do not Wish'to be limited to such formsnor to the exact details of the other mechanisms for operating thedasher.

What I claim is:

l. A mechanical motor for the purpose described comprising a pair ofcoil springs, a lever of the first kind extending along the springs,connections between opposite ends of the lever and corresponding ends ofthe springs for tcnsioning said springs simultaneously from both ends asthe lever is rocked in one direction, and means including aselfreleasing clutch for operating the lever to tension the springs,said lever being actuated by the tension springs as soon as the clutchis released.

2. In a mechanical motor for the purpose described, the combination ofaplunger, a coil spring, means including a lever for reciprocating theplunger, connections between said lever and opposite ends of the springfor tensioning said spring from both ends at the same time as the leveris rocked in one direction, and means including" a selfreleasing clutchfor operating the lever in such direction, said lever being actuated bythe tension spring in the opposite direction when the clutch isreleased.

3. In a mechanical motor for the purpose ,descr1bed, in combination Witha plunger, a

lever for operating the plunger, a coil spring running lengthwise of thelever to opposite sides of its .fulcrum, connections between said leverand opposite ends of the spring for tensioning said spring from bothends simultaneously as the lever is rocked in one direction, and meansincluding a self-releasing clutch for operating the lever in saiddirection, said lever being,- operated in the opposite direction by thetension spring when the clutch is released.

4.. In a mechanical motor for the purpose described, the combinationwith a plunger and an operating lever therefor, coiled motor springsrunning lengthwise of the lever at opposite sides thereof, connectionsbetween the opposite ends of the lever and corresponding ends of thesprings for tensiouing said springs from both ends simul taneously, andmeans including a self-releasing clutch for operating -the lever in onedirection and releasing it to permit said springs to operate the leverin the opposite direction.

In Witness Wicreof l have hereunto set my hand this 12th day of February1913.

EVA E. GnnuNLnAF.

